RX Bletooth ESP32

//RX
#include "BluetoothSerial.h"

#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif

BluetoothSerial SerialBT;

void setup() {
  Serial.begin(115200);
  SerialBT.begin("ESP32test"); //Bluetooth device name
  Serial.println("The device started, now you can pair it with bluetooth!");
}


void loop() {
  uint8_t recv_data[6];
  if (SerialBT.available()) {
    SerialBT.readBytes(recv_data, 6);
    //Serial.printf("%c %c %c %c %c %c", recv_data[0], recv_data[1], recv_data[2], recv_data[3], recv_data[4], recv_data[5]);
    Serial.println((char*)recv_data);
    Serial.println();
  }
  delay(20);
}